Sad-iron.



JVA. GOOGAN.

SAD IRON.

APPLIGATION FILED NOV. 19, 1909.

Patented Oct. 17, 1911.

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COLUMBIA PLANOGRAI'H CO-,

wif mcoow J. A. GOOGAN.

SAD IRON.

APPLICATION FILED 11017.19, 1909.

Patented Oct. 17, 1911.

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JAMES A. COOGAN, OF MILWAUKEE, WISCONSIN.

SAD-IRON.

incense.

Specification of Letters Patent.

Patented Oct. 1'7, 1911.

Application filed November 19, 1909. Serial No. 528,870.

I '0 all whom it may concern:

Be it known that 1, JAMES A. CooGAN, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in sadlrons, of which the following is a specification.

My invention relates to improvements in sad irons, with especial reference to that class of sad irons in which liquid hydrocarbon is fed to an interior burner which maintains the heat of the iron while in use.

The object of my invention is to provide a form of construction in which the front end or point of the iron may be adequately heated, and in which the burner and fuel supply connections may be readily removed, cleaned and replaced, and when in position of use may be held rigidly in such position by means of a detachable cover, thus dispensing with auxiliary fastenings for the burner and supply pipe.

A further object of my invention is to provide means for concentrating the heat of the burner upon the nozzle and upon that portion of the supply duct adjacent to the nozzle, whereby the heat of the liquid fuel supply will be much more intense at the nozzle than at any other point in the duct.

In the following description reference is had to the accompanying drawings, in which Figure 1 is a central longitudinal sectional view of a sad iron embodying my invention. Fig. 2 is a side view with the front end illustrated partly in section on line m-m of Fig. 3. Fig. 3 is a plan view with the cover removed, and showing the air supply and mixing tubes in horizontal section, drawn through the axis of the air supply ducts with the fuel supply duct partially broken away. Fig. 4 is a detail sectional view drawn on line y-3 of Fig. 1, and showing also the nozzle supporting fork.

Like parts are identified by the same reference characters throughout the several views.

The body portion A may be of any ordinary construction. The cover B is preferably provided with a hook C, engaging a recess C in the front end of the body portion. The body has an interior cavity as is customary in this class of sad irons and suitable openings are provided for the escape of gases of combustion. It is not essential whether these openings are formed in the body or in the cover, but in the con struction shown, a series of openings adapted for this purpose are provided by forming recesses in the upper margin of the body directly underneath the cover, as illustrated in Figs. 1 and 2. The cover is also provided with a locking lever D, pivoted at D to the cover, and provided with a cam-shaped member d adapted to engage under the head of a headed post E connected with the body as shown in Fig. 2. The lever may be swung to disengage the cam d from underneath the head of the post E, whereupon the cover may be lifted at the rear end and the hook C withdrawn from the recess C at the front end. The cover is provided with an aperture to receive the post E, which aperture is sufficiently large to permit the head of a post to pass through it. The specific means for fastening the cover in posi tion forms no part of the present invention and therefore need not be described with further particularity, since any other form of fastening might be specified if desired.

A liquid fuel supply tank F is supported at the rear of the body A by means of a duct 7" extending angularly and rearwardly from a horizontal duct G within the body of the sad iron, this duct G extending through a notch in the rear wall a of the body, and being provided with a member H adapted to seat in said notch. The outward rear end of the duct G is provided with a stufling nut g, through which an ordinary valve rod I extends, this valve rodpassing through the duct G and controlling the discharge of the liquid fuel. through the nozzle formed in the nut J at the inner end of the duct G. A forked member K supports the inner end of the duct G from the bottom of the sad iron. When the sad iron is in use, the fluid discharged through the nozzle J vaporizes on leaving said nozzle, or prior to its discharge therethrough, and the vapor is received in the mixing tube L, which, at its rear end, is coupled to the duct G by a. coupling member L, engaging a cylindrical portion of the member K. The forward end of the mixing tube L is curved downwardly and rearwardly, and receives the burner tube M, the latter being adapted to telescope in the lower or open end of the tube L. This burner tube M extends horizontally through the fork of the member K to a point near.

the rear end of the sad iron, and is provided with a series of slits m through which the whereby the heat of the burning gases is.

utilized not only for heating the body A but also for heating the liquid fuel in the duct G. The forked member K not only supports the forwardend of the duct Gr, but being made of metal, it collects the heat of the burner and concentrates it upon the nozzle end of the duct G, whereby the liquid is raised intemperature to a vaporizing point at the nozzle. It will be observed that the burner tube M extends to a substantial distance in front of the fork K and underneath the rear end of the upper portion of, the mixing tube L, thus not only heating the body A at its front end, but also heating the mixing tube and the air ducts 0 leading to this portion of the tube L. These air ducts O are preferably tubular in form and extend divergently from the mixing tube L and rearwardly to the sides of the body portion A, where the open extremities of the tubes 0 are provided with seatingmembers P adapted to fit suitable notches in the side walls of the body. These members P are preferably provided with flanges P, which overlap on the inner surfaces of the body walls, thus forming a substantially tight joint.

Referring to Fig. 3, it will be observed 'i that with the described construction, open space is provided at Q in front of the air tubes 0 and around the forwardly projecting portion or loop of the mixing tube L, thus allowing the heated air and gases of combustion to pass from the burner forwardly and upwardly over the surfaces of the air tubes and mixing tube. When in position of use, the burner M, mixing tube L, supply duct G and supply tank F are all held in position by the cover B, which operates upon the coupling sleeve L and presses the fork supporting member K against the bottom of the body. A further 7 support being derived from the members P engaging in the side wall notches of the body, and the member I-I engaging in the notch of the rear wall a. V

I attach great importance to the fact that with the described construction, the heat, air

and gases of combustion are permitted to circulate on all sides of the air tubes 0 and the mixing tube L, and arealso permitted to circulate in contact with the side and bottomwalls of the body at all points, since the body is thereby not only heated with substantial uniformity from end to end, but the air is heated to a high temperature before it is introduced into the mixing tube,

and the mixing tube itself being subject to thedirect heat of the burner, there is no tendency to reduce the temperature of the vaporized liquid fuel after it leaves the nozzle. This is of great importance for the reason that the expansion of the vaporized fuel in itself tends to reduce the temperature, and if met by streams of cold air, partial condensation is likely to result. I also attach great importance to the fact that the fork K is secured to the tube G in close proximity to the nozzle, and that the burner M extends through the fork and provides a heating flame both at the front and rear thereof, the fork not only concentrating the heat of this flame, but the flame being also permitted to act directly upon the nozzle and mixing tube in front of the fork. It will be observed that with my improved construct-ion there is no opening between the nozzle and the mixing tube, since the air is supplied to the vapor through the ducts 0. It will also be observed that the base of the body portion is provided wit-l1 a recess or pocket S in the rear of the partition or wall a and an aperture S leads through said wall, whereby gasolene or other liquid fuel may flow from the body into said pocket. This facilitates vaporizing the fluid initially since a small quantity of the liquid may be discharged and permitted to flow into the pocket S and then ignited, whereupon it will warm the outwardly projecting portion of the duct D and also the contents of the tank F.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent is,-

1. In a sad iron of the described class, the combination with a body, open at the top, of a detachable cover, a supply duct mounted in said body, and provided with a nozzle, a mixing tube leading forwardly, downwardly and rearwardly from said nozzle, air supply ducts leading angularly inwardly through the side walls of the body to the mixing tube, and a burner connected with the lower end of the mixing tube, said supply duct, air ducts, mixing tube, and burner being loosely mounted in said body and held in position therein by the cover.

2. In a sad iron of the described class, the combination with a body, open at the top, and provided with a removable cover, of a supplyduot, nozzle, mixing tube, and burner loosely mounted in said body and held in position therein by the cover, and a set of air supply ductsextending inwardly from the exterior and communicating with the mixing tube in advance ofthe nozzle.

3. In a sad iron of the described class, the combination with a body, open at the top, and provided with a removable cover, of a supply duct, nozzle, mixing tube, and burner loosely mounted in said body and held in position therein by the cover, and a set of air supply ducts extending inwardly from the exterior and communicating with the mixing tube in advance of the nozzle, to-

gether with a heat absorbing and conducting fork, connected with the nozzle and straddling the burner at an intermediate point, and said burner having gas discharging apertures on both sides of said fork.

4. In a sad iron of the described class, the combination with a body, open at the top, and provided with a removable cover, of a supply duct, nozzle, mixing tube, and burner loosely mounted in said body and held in position therein by the cover, and a set of air supply ducts extending inwardly from the exterior and communicating with the mixing tube in advance of the nozzle, said air ducts being connected with the mixing tube and having seating members loosely engaged in and filling recesses in the Walls of the sad iron.

5. In a sad iron of the described class, the combination with a body, open at the top and provided with a removable cover, of a supply duct, nozzle, mixing tube and burner loosely mounted in said body and held in position therein by the cover, and a set of air the burner, said mixing tube and air supply duct, and that port-ion of the mixing tube immediately in front of the nozzle, being directly exposed along the bottom and sides thereof to the heat of the forward end portion of the burner.

6. In a sad iron of the described class, the combination with a body, open at the top, and provided with a removable cover, of a supply duct, nozzle, mixing tube and burner, mounted in said body, with the mixing tube inclosing said nozzle and a set of air supply ducts extending inwardly from the exterior and communicating with the mixing tube in advance of the nozzle.

In testimony whereof I affix my signature in the presence of two witnesses.

JAMES A. COOGAN.

Witnesses:

LEVERETT C. WHEELER, I. D. BREMER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

